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Troubleshooting Poor Transmitting Range
In order to ensure optimal range, the antenna should be installed at least 7.5 cm (3 in.) from
the roof – 2.5 cm (one inch) below the tint strip is generally the best location. Install the
antenna as far as possible from radio antennas, GPS, Onstar or factory compasses.
Many factors may affect the operating range of the transmitter. Some of these are:
The condition of the battery in the transmitter.
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The operating environment (for example: downtown radio-frequency noise,
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airports, cellular phone towers...)
Metal: any type of metal will affect operating range. This includes the metal in the
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car.
The shape of the vehicle can affect range as well; vans in general have an
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especially poor range.
The shape of the roof and A-pillars brings about considerable radio-frequency
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deflection (in this case the signal from the remote control). As a result, the
direction in which the vehicle is facing in relation to the remote control can affect
the range. Straight on – standing in front of the vehicle – generally gives you the
greatest range; the second best performance is from the back. Using the remote
control from either side of the vehicle will usually give the lowest range.
The range will be significantly lower in a crowded parking lot than in open space.
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Always hold the transmitter high, approximately at shoulder height. Holding the
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transmitter against your chin will also increase your range: your head acts as an
antenna.
The operating range will be somewhat lower on vehicles equipped with an
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aftermarket or factory alarm.
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Windows and windshields tinted with lead or metallic tints will decrease the
operating range.
The antenna cable may have been cut and/or is grounded out on the chassis. Try
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using another cable.
The receiver may be faulty. Try replacing it with another.
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AS-1414/ AS-1424
Installation Guide
P. 15
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